Finding the Fourth Proportional to 1,209,231.77, 1,813,555.83 and 356,071.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,231.77 : 1,813,555.83 = 356,071.46 : x
2. Step 2: Convert to fraction form
   1,209,231.77/1,813,555.83 = 356,071.46/x
3. Step 3: Cross multiply
   1,209,231.77x = 1,813,555.83 × 356,071.46
4. Step 4: Simplify right side
   1,209,231.77x = 645,755,463,111.83
5. Step 5: Solve for x
   x = 645,755,463,111.83/1,209,231.77
6. Step 6: Final answer
   x = 534,021.25